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` H. VAN HQBVBNBERGH.

PRINTING TELBGRAPH.

Patented Mar.20,1883.

ist Zine 1s AWITNESSES Y 5 l "E UNITED STATES PATENT rEicE.

HENRY .VAN HOEVENBERGH, OF ELIZABETH, NEW JERSEY, ASSIGNOR TO THE WESTERN UNION TELEGRAPH COMPANY, OENEW YORK, N. Y.

PRiNTiNG-TELEGnAPi-i.

SPEGIFIGATIGN forming part of Letters Patent No. 274,416, dated March 20, 1883.

Application tiled December 19, 1882. (No model.)

Io all whom it may concern:

Be it known that I, HENRY VAN 'lloEvnN-- BERGH, a citizen of the United States, residing in the city of Elizabeth, county of Union, and State of New Jersey, have invented certain new and useful Improvements in Printing- Telegraphs, of which the following is a specilication.

In United States Letters Patent No. 251,658, granted to me December27, 1881, I have shown a two-wire printing-telegraph in which two type-wheels are rigidly secured to their shaft, are rotated by clock-work, and are released step by step by reverse pulsations sent over one ot' two main lines, which line embraces the coils of the escapement and press-magnets. Under the influence oil-reversed pulsations of normal strength thepress-leveris not actuated; but when a pulsation of increased strength of either positive or negative polarity is transmitted the press mechanism is brought into operation. i To the end of enabling the immediate printing ot' figures after letters, and vice versa, without irst carrying the type-wheels to a zero or predetermined point, and also to enable the paper to be'moved for spacing between words without first carrying the type-wheels to zero, I have there shown vhat I term a tilting press-padwhich, through the agency of one polarity of current upon a second main line,

upon actuating the, press-lever, will cause a letter to be printed, and through the agency of a current of opposite polarity uponpsaid second main line, and upon actuating the press mechanism, will cause a ligure to be printed, while if an increased impulse is sent upon the rst line and no impulse upon the second line both of the oscillating ends ot' the press-pad will be held by a clutch from reaching the type-wheels, but the paper will vbe moved forward one space.

Printing is effected by causing the press-lever,on its upward movement, to lockthe rotatlng type-wheel for an instant before the presspad has brought the paper in contact with the type-wheel, in order that the type-wheel may be temporarily stationary at the instant of printing. I have found, however, that where a tilting press-pad is employed and a stop is type-wheel.

rigidly fixed to the press-lever, intended to arrest the type-wheels only a little in advance of an impression, a current of great strength is required to lift the press-lever to print in the short space oi' time intervening (or perhaps a little more) between two consecutive pulsations upon the line; and it is also difficult to secure clear impressions, from the fact that the rebound following an impression will not enable the press-pad to be firmly pressed to the I herein desire to describe and claim means whereby the type-wheels are arrested in advance of the movement of the press-lever to effect an impression from the type-wheel, which consists of an arm upon an independent bearing frictionally connected to an arm upon the press-lever, thus enabling the press-lever proper to be mademuch lighterand the inertia necessary to be overcome in its movement greatly diminished. I also desire to describe and claim, as an improvement upon a tilting press-lever, two independent press-levers, each of which may be separately and independently raised by the same press-magnet upon the proper movement of an oscillating bar controlled and thrown into either of two opposite positions, according as an impulse of positive or negative polarity is sent over the second line, and if no impulse is sent over the second line the oscillating bar will be held in a middle position and will rest between the two separate press-pads, whereby upon actuating the presslever the press-pads will not be moved. Itis possible, however, and sometimes ad vantageous,to dispense with the lrictionally-actuated arm, to which I have referred,for the purpose of stopping the type-wheelin advance ofthe impression, and depend entirely upon the presspads.

For the purpose of more fully describing my improvements, reference is had to the accompanying drawings.

Figure l represents a side view ofthe typewheel escapement with the lever for stopping the type-wheel, one of the independent im pression-pads, the oscillating bar for determining which of two pads shall be used, and the impression maguet and lever. Fig. 2 represents in perspective fthe two type-wheels, 'two independent impression-pads, the oscillating bar 1o:

for determining which pad shall be actuated', with the polarized magnets, and means for directing and controllingsaid oscillating bar.

Referring to Fig. 1, the polarized magnet 100 101, with its armature 98, bar 99, double pallet 96, and ratchet-wheel 91, forms an escapement for releasing the type-wheels 88 89 by reversals of polarity transmitted upon the'first line, 18. The electro-magnet 108, also in the first line, 18, is actuated upon an increased strength of current of either polarity to attract armature 109, having firmly affixed thereto-bar 103.

Upon bar 103 is firmly fixed a bar, 110, upon the end of which is pivoted, at 116, a bar, 1, capable of an oscillating movement at right angles to the movement of`bar 103. Below its pivoted support oscillating bar 1 is composed of two arms, 1l and l", Fig. 2, between which arms is placed the Lshaped lever 115, securely fixed to the rock-shaft r. 112a is a polarized magnet, having an armature-bar, 113, to which bar is pivoted connecting-shaft 114. Bar 121 is firmly fixed to rock-shaft r,its opposite end being pivoted to connecting-shaft 114C. Upon an impulse of predetermined polarity being sent upon the second line, 78, armature-bar 113 will be attracted to the left, say, and through connecting-shaft11-.t will rotate rock-shaftr and L- shaped arm 115 toward the right. Arm 115 will thus strike one arm, 1, of oscillatingv lever 1, throwing the upper end of lever 1 under the support c of impression-pad 105e, to be hereinafter described. A current of opposite polarity would of course actuate armature-bar 113 and its connections to throw oscillating lever 1 in an opposite direction and under support c of impression-pad 105. When no current is upon the secondline, 78, oscillating bar 1 will rest in its normal position midway between the supports o c of the two impression-pads.

c c' are two curved bars loosely pivoted upon support s, projecting from the frame ofthe instrument. Upon these curved bars c c are mounted two impression-pads, 105 105e. The curved bars c c separate sufficiently to allow oscillating bar 1 lto pass between them, and they normally rest by gravity upon stop p, (shown in Fig. 1,) and fixed tothe frame ot' the instrument.

A bar, b, having a hooked termination, b', as shown, is loosely pivoted to the frame of the instrument at c, the stops d d upon opposite sides thereof limiting its movement in either direction.

Upon the bar 103, controlled by the impression-magnet, and moving with it, is a springarm, a, having securely fixed at point 200, upon the side thereof nearest bar b, a piece of leather, a", or similar substance possessing frictional properties. The face of a is normally in contact with the end b of bar b, and upon the upward movement of bar 103 arm a partakes of the upward movement, and through thefrictional contactlifts b to engage with the toothed wheel 125, toothed wheel 125, as described in my prior patent, having a number of teeth equal to the number of characters upon the periphery of the type-wheel. It must be observed, however, that upon the upward movement of bar 103 the end of lever b is so 'adjusted as to engage the wheel 125 and stop the type-wheel shaft before pad 105, for instance, can strike the type-wheel to produce an impression. I may dispense with the mechanism for stopping the type-wheel while the impression is being taken, depending' upon the contact of the impression-pad with the typewheel alone, thus taking a flying impression,77 the 'present arrangement of the impression-pads being such that a short and quick stroke can be used to produce the impression. y The operation of the machine may be described as follows: The type-wheel shaft, having a constant tendency to rotate in the direction of the arrow, Fig. 1, is released step by step by rapid reversals of polarity actuating the escapement mechanism. Upon the depression vof a key an impulse of determinate polarity, according as it is desired to print a letter or figure, is transmitted upon -the second line, andimmediately thereuponthenormalstrength of current in the first line is increased. Let us suppose it is desired to print a letter: the current sent in the second line would be of a polarity to actuate magnet 112e, to attract armature-bar 113 to the left, tilting oscillating bar 1 to the right, and thus throwing its upper end under the lever of printing-pad c. The increased strength of current in the first line actuates magnet 108 to attract its armature and bar 103, carrying the oscillating bar l and lever b,through its frictional contact with springarm a, upward. The distance through which arm b has to move before engaging wheel 125 is much less than that through which pad 105 has to move to strike type-wheel 89, so that the rotating shaft of the type-wheel will'be stopped by bar b before the arrival of pad 105, thus allowing a clear impression to be taken from a stationary typewheel. If it were desired to print a gure, the current in the second line would be of an opposite polarity, thus directing oscillating bar 1 under the lever c of impression-pad 1052*. 1f it were desired to print a space, no current would be sent in the second line. The transmitter suited to these conditions is fully described and claimed in my prior patent above referred to.

What I claim, and desire to secure by Letters Patent, is

1. In a printing-telegraph instrument, the combination of a press-lever, two type-wheels, two independent press-pads,'and means whereby the press-lever may actuate either presspad, a ratchet stop-wheel, and a frictionallyoperated stop for arresting said ratchet stopwheel actuated by the press-lever.

2. The combination, in a two-line printinginstrument, of printing electro-magnet 108 in the first line, presslever 103, polarized electromagnet 112a in the second line, armature 113,

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Type-Wheels 88 and 89, printing-pads 105 and l 4. .The type-Wheels S8 89, toothed wheel 105, and mea-nswhereby, upon passing a cur- 125, arm b, and impression-lever 103.

rent of one polarity through said second line, 5. The combination of' type-wheels 88 89,

printing maybe eieoted from one type-wheel, toothed vWheel 125, lever b, impression-lever 5 and upon passing' a current of opposite polar- 103, and press-pads 105 105g.

-ityizhrongh said line printin may be effected T T T upon the other type wheel g HEERX VAB HOEVENBERGH.

3. In a printing-telegraph instrument, the Witnesses:

combination of ratchet-wheel 125, datent b', WM. B. VANSIZE, Io press-lever 103, and friction-arm a. l WM. ARNOUX. 

